摘   要：研究了单掺、复掺陶瓷球和钢纤维对橡胶混凝土抗压、劈裂抗拉、抗折性能及韧性的影响，并进行了方差和相关性分析。结果表明：单掺陶瓷球提高了橡胶混凝土的抗压、抗折性能，降低了劈裂抗拉性能；单掺钢纤维提升了橡胶混凝土的抗压、劈裂抗拉、抗折性能，且复掺陶瓷球后增强效果更显著；陶瓷球和钢纤维的协同作用显著改善了橡胶混凝土的抗变形能力，使破坏形态呈现出“裂而不散”的特征；单掺陶瓷球降低了橡胶混凝土的韧性，而单掺钢纤维或复掺陶瓷球和钢纤维均能有效提高韧性；钢纤维的掺入对橡胶混凝土抗压强度、劈裂抗拉强度和抗折强度的影响显著，陶瓷球的掺入仅对橡胶混凝土抗压强度的影响显著。

Abstract: The effects of individual and compound addition of ceramic ball and steel fiber on the compressive, splitting tensile and flexural properties, and toughness of rubber concrete were investigated, and variance analysis and correlation analysis were conducted. The results show that individual addition of ceramic ball enhances the compressive and flexural properties of rubber concrete, while reducing the splitting tensile properties. The individual addition of steel fiber enhances the compressive, splitting tensile, and flexural properties of rubber concrete, with the effect more significant when compounded with ceramic ball. The synergistic effect of ceramic ball and steel fiber significantly improves the deformation resistance of rubber concrete, resulting in a damage morphology characterized by "cracking without disintegration". The individual addition of ceramic ball reduces the toughness of rubber concrete, while the individual addition of steel fiber or the compound addition of ceramic ball and steel fiber effectively improves the toughness. The incorporation of steel fiber exerts significant effect on all three mechanical properties, whereas the incorporation of ceramic ball demonstrates significant effect only on compressive strength.